Solar Heat Gain

Posted by Curbie on April 23, 2009, 3:11 pm

I am planning a move (hopeful my last) to retire, I think I'll be ok
financially if I do as much of home improvements as possible myself,
which after 30 years in front a computer, I'm looking forward to.

Over the past year I've created a bunch of small single-purpose
spread-sheets to study different aspects home energy needs and now I'm
combining them all into one spread-sheet to study their inter
relations.

I have a sheet that to calculate R-Values for envelope design elements
which are then combined for top, bottom, right, left, front, and back
for 1° Heat-Loss Per-Day for each of the six envelope sides using the
basic formula:

Heat Loss Rate = Area x (Temp inside - Temp outside) / Thermal
Resistance of structure

Based on calculations from here:
http://hyperphysics.phy-astr.gsu.edu/Hbase/thermo/heatloss.html

They build on this general formula to calculate 1° Heat-Loss Per-Day,
and from there incorporate heating and cooling Degree Days for total
heat-loss for whatever time period. I down-loaded Typical
Meteorological Year (TMY) data for all 239 reporting stations to
calculate Tin, Tout, HDD, & CDD for all locations (I'm, still not
certain on the best location to move to).

I think I'm ok up to here, but now I'm looking to modify the general
formula to include solar heat-gain, and my envelope design sheet
already includes general compass direction, I image that TMY has
whatever data is needed, just looking for help in modifying the
general formula.

Thanks,

Curbie

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